Magazine for blank forming machinery



April 5, 1932. A. NOVICK MAGAZINE FOR BLANK FORMING MACHINERY 3Sheets-Sheet INVENTOR BY M haw f'w ATTORNEYS April 5, A Nov gK 1,852,722

MAGAZINE FOR BLANK FORMING MACHINERY Filed Ffebv 24, 1928 3 Sheets-Sheet2 INVZNTOR E BY %WM ATTORNEYS pril 5, '1932'.

I}- JJVIL Figure 2 I from the magazine;

Patented Apr. 5, 1932 UNITED STATES ABRAHAM novrox, or rnosmne,

(20., me, or new YORK,

NEW YORK, ASSIGNOR T 15. L. SMITHE MACHINE 7' N. Y., A CORPORATION OFNEW YORK MAGAZINE FOR BLANK FORMING MACHINERY Application filed.February 24, 1928.

This invention relates to magazines for blank forming machinery, andmore particularly to a magazine for use in a mechanism for punchingblanks from sheet material and for stacking the blanks in such mannerthat they may be removed at will without interruption to the punchingoperation and without disarrangement of the blanks remaining in thestack.

A particular feature of the invention relates to the provision in amachine for operating on blanks and for continuously delivering them, ofa blank magazine having a downwardly extending leg for the reception ofthe blanks and a communicating, upwardly extending leg from which theblanks may be removed.

Other objects and advantages will hereinafter appear.

In the drawings forming part of this specification;

Figure 1 is a sectional, side elevation of a machine embodying featuresof the invention;

is a fragmentary, front elevation of the machine;

Figure 3 is a fragmentary, plan view showing particularly the blankforming dies and the magazines associated therewith;

Figure 4 is a fragmentary elevation of one of the legs, broken awayintermediate its ends for compactness of illustration, and showsthe'manner in which the blanks are packaged in groups prior to theirremoval Figure 5 is a horizontal sectionthrough the discharge leg of amagazine, showing also a tie member applied to the blanks in themagazine;

Figure 6 is a view showing a stack or package of after removal from themachine;

Figure 7 is a horizontal, sectional view, largely diagrammatic,showing-how the'blank material is fed to the punches; and

Figure 8 is a fragmentary, transverse, sectional view showingparticularly a detail of the cutting die.

, For purposes of illustration, the invention is shown as embodied in amachine for mak- 'velope, but which he blanks as they-are bound togetherplunger 12.

Serial 110,256,568.

ing and deliverin envelope fastening blanks of cross shape. ach of theseblanks is provided with body members 1 adapted to have prongs formedtherein and to be clinched to the back of an envelope by such prongs.Each blank also comprises fingers 2 which normally lie flat against theback of the enmay be bent outward into substantial parallel relation,inserted through i the sealing flap of the envelope, and then foldeddown again to substantially their original positions to secure theenvelope closed. The blanks are formed of rather soft, flexible sheetmetal.

It is desirable to form the blanks and then secure them in bundles orpackages for shipment to envelope manufacturers. It is an importantobject of the present invention to avoid interruption of the blankforming operations or blanks when it becomes necessary to package andremove a group of the blanks from the machine. I

The blank forming machine comprises a frame 3 in which a main shaft 4 isjournaled. The shaft & is continuously driven by apulley 5 or othersuitable means and carries a crank pin 6 which, througha connecting rod7, reciprocates a plunger head 8 common :to a plurality of plungerunits. The plunger head 8 is provided with guide ribs 9 which slide insuitable guideways or grooves 10 formed in the frame 3.

As best seen in Figure 2, the plunger head 8 is provided with aplurality of T-shaped slots or guideways 11 with which the complementaryshaped upper ends'of plungers 12 slidingly interfit. Each plunger 12forms a part of a. punch unit 13 which is detachably secured upon a bedplate 1 1 of the frame 3 by means of bolts 15. Each unit comprises a diesupporting plate 16, a die block 17 detachablyssecured thereto, and abody member 18 forming a guide for the reciprocable The body'18 may bedetachably secured to the die supporting block 16 by bolts 19.

Each plunger 12 is cut away at the lower end thereof to form a cuttingpunch 20 of the configuration of one of the blanks. The

disarrangement of the formed punches are necessarily substantiallyseparated from one another (see Figure 7) so that if the sheet ofmaterial 21 from which the blanks are to be punched were fed at rightangles to the line of the punches, the proportion of waste of materialwould be very large. In order to avoid such waste, provision is made ofguides 22 and 23 for guiding the material to the plungers in a pathoblique to the line of the plungers, as shown in Figure 7. This methodof feeding the material to the plungers causes the cuts made in thematerial by the plungers to be situated much more closely together thanthe plungers themselves are situated with respect to one another.

A magazine is provided for receiving the blanks punched by each of thepunching units. This magazine is composed of two channeled bars 24secured together in uni formly spaced relation by connecting mem bers25. The magazine comprises a downwardly extending, introductory leg 26,an upwardly extending delivery leg 27, and a curved connecting portion28 between said legs. As the blanks are punched, they descend in theintroductory leg 26, then pass through the connecting portion 28, and upthe delivery leg 27 so that they form an ascending column in leg 27. Theblanks are guided in such movement by the channel bars 24 which embracethe fingers 2, 2 of the blanks.

It will be seen that the blanks rise in the delivery leg to a pointsubstantially above the top of the introductory leg, so that the weightof the blanks in the delivery leg exceeds that of the blanks in theintroductory leg. The excess weight of the blanks in the delivery legtends to produce an unbalanced condition, and therefore to produceretrograde movement of the blanks in the magazine when the pressure ofthe plunger is withdrawn. This is overcome, however, by making theopening 29 in the upper face of the cutting die 17 somewhat smaller thanthe magazine, and flaring the opening downwardly, as indicated at 30.Each blank is stressed slightly by the cutting pressure, andconsequently in its normal or unstressed condition is of slightly largerdimensions than the opening 29 through which it is punched. The blanksare therefore restrained by the die 17 against retrograde movement.

T e purpose in providing the magazine with g to enable the blanks to beremoved in groups from the magazine without interrupting the operationof the punch and without interfering with the orderly reception of theblanks by the magazine. The magazine is provided with an index mark 31and is also provided with suitable means, such as a second index mark32, to indicate when a predetermined number of blanks stands above anupwardly extending delivery leg is the mark 31. The difference in levelof the marks 31 and 32 may, for example, be equal to the thickness of athousand blanks. When the attendant observes that the desired number ofblanks to be formed into a package stands above the mark 31, he liftsthe blanks situated above said mark without removing them from themagazine, as indicated in Figure 4, and inserts from beneath the stackof blanks thus lifted a staple-like binding number 33 which embraces theblank stack and has its legs situated at the vertices of diagonallyopposite angles formed by the bodies 1 and fingers 2 of the blanks. Whenthe lifted blanks have been thus united, the staple member 33 iswithdrawn from the magazine, at the top, with the stack of blanksembraced by it, and thebundle or package illustrated in Figure 6 iscompleted by impaling holding and locking plates 34- and 35 upon theprojecting ends of the staple legs. The stack binding means heredisclosed is disclosed and claimed in my pending application Serial No.241,001, filed December 19, 1927, entitled Blankstack and holdertherefor.

It will be observed that the delivery legs of the several magazines lieside by side so that a single attendant can watch all of them and removethe blanks from them, as required.

lVhile I have illustrated and described in detail certain preferredforms of my invention, it is to be understood that changes may be madetherein and the invention embodied in other structures. I do not,therefore, clesire to limit myself to the specific constructionsillustrated, but intend to cover my invention broadly in whatever formits principle may be utilized.

I claim:

1. In combination, means for forming blanks, and a U-shaped magazine forre ceiving formed blanks, having a downwardly extending leg to receivethe blanks, and a communicating, upwardly extending, straight leg fromwhich the blanks may be removed, said upwardly extending leg beingcomposed of separated confronting channel bars for embracing oppositeextremities of the blanks to maintain the superposed blanks insubstantially coinciding relation, said channel bars being spaced fromone another sufficiently to permit a staple-like holding member to beinserted between them and beneath a stack formed of a multiplicity ofblanks and then into embracing relation to such stack, so that the stackof blanks may be removed in orderly fashion and packaged with theholder.

2. In combination, means for forming blanks, and a U-shaped magazine forreceiving formed blanks, having a downwardly extending leg to receivethe blanks, and a communicating, upwardly extending, straight leg fromwhich the blanks may be removed, said upwardly extending leg beingcomposed of separated confronting channel bars for embracing oppositeextremities of the blanks to maintain the superposed blanks insubstantially coinciding relation, said channel bars being spaced fromone another sufficiently to permit a staple-like holding member to beinserted between them and be ne'ath a stack formed of a multiplicity ofblanks and then into embracing relation to such stack, so that the stackof blanksmay be removed in orderly fashion and packaged with the holder,the said channel bars being connected to one another only at one side,and there only at widely separated points.

3. In combination, means for forming blanks, and a U-shaped magazine forreceiving formed blanks, having a downwardly extending leg to receivethe blanks, and a communicating, upwardly extending, straight leg fromwhich the blanks may be removed, said upwardly extending leg beingcomposed of separated confronting channel bars for embracing oppositeextremities of the blanks to maintain the superposed blanks insubstantially coinciding relation, said channel bars beingspaced fromone another sufficiently to permit a staple-like holding member to beinserted between them and beneath a stack formed of a multiplicity ofblanks and then into embracing relation to such stack, so that the stackof blanks may be removed in orderly fashion and packaged with theholder, the said channel bars being connected to one another only at oneside, and there only at widely separated points, and by members whichare bowed outward to avoid interference with the blanks and with thestaple-like holding member.

In testimony whereof I have afiixed my signature to this specification.

ABRAHAM NOVICK,

